Cranborne Audio Camden 500 Series Microphone Preamp | Sweetwater
Quicksilver line preamplifer | LP GEAR
RU-MLA2T ‐ Dual Microphone / Line Preamplifier
RME 12Mic Mic- and Line-Level Preamp for Audio Networks 12 MIC
Preamps & Audio Distribution, Pro Audio & Sound Equipment | Full Compass Systems
Douk Audio L1 Mini Stereo Line Level Booster Audio Signal Amplifier HiFi Digital Preamp Volume Control for Phone TV Audio Player|Amplifier| - AliExpress
1) Line Audio 8MP - 8 Channel Mic Preamp | bc's gear | Reverb
You Can DIY!: Repurposing an Old Preamp for Line-Level Duty | audioXpress